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Constant-pressure liquid source device containing overflow groove in pressure container

A technology for pressure vessels and overflow tanks, which is applied in measuring devices, testing/calibrating devices, liquid/fluid solid measurement, etc., can solve the problem of poor flow stabilization accuracy of the gas-liquid container pressure stabilization method, achieve a wide range of applications, and avoid The effect of investing more

Inactive Publication Date: 2011-11-23
王可崇
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Problems solved by technology

The steady flow accuracy of the gas-liquid container pressure stabilization method is not as good as the water tower method

Method used

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  • Constant-pressure liquid source device containing overflow groove in pressure container
  • Constant-pressure liquid source device containing overflow groove in pressure container
  • Constant-pressure liquid source device containing overflow groove in pressure container

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Embodiment Construction

[0009] The following content is combined with the figure 1 , 2 The specific embodiment of the present invention will be further described.

[0010] exist figure 1 Among them, the pressure vessel 3 is a low-pressure vessel with a closed cylindrical structure. The pressure overflow tank 2 adopts a cylindrical structure with an upper opening, and its diameter is smaller than that of the pressure vessel 3. The two cylinders are installed on the same vertical central axis. The distance between the outer wall of the pressure overflow tank 2 and the inner wall of the pressure vessel 3 should be large enough (it is recommended to be greater than 0.1m, because the overflow of the overflow tank also flows down its outer wall), so that the annular gap between the two can ensure the pressure of the pressure vessel. 3 The air pressure of the upper part is consistent with that of the lower part. The design volume of the pressure overflow tank 2 should ensure that at the maximum flow ...

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Abstract

The invention discloses a constant-pressure liquid source device containing an overflow groove in a pressure container, the device adopts the structure of the overflow groove in the pressure container for getting stable liquid level and keeping pressure gas acted on the stable liquid level constant, therefore, a constant-pressure liquid source has the flow stability of the water tower pressure stabilization method and the advantage of being capable of getting high Reynolds number calibration liquid of the gas-liquid container pressure stabilization method, the cost and the floor area are lessthan those of the water tower pressure stabilization pressure, the high Reynolds number calibration liquid can also be obtained, the precision of stable flow is also better than that of the gas-liquid container pressure stabilization method, the constant-pressure liquid source uses a differential pressure transmitter to measure the pressure difference between the pressure of the pressure container and the pressure of a constant-pressure container, a relevant control device is used for controlling according to the pressure difference and then the gas pressure in the pressure container also hasvery high stabilization precision. The constant-pressure liquid source can not only be used as a standard calibration device for a variety of liquid flowmeters, but also be directly used for measurement, thereby having a wide range of applications.

Description

technical field [0001] The invention relates to a constant-pressure liquid source device in the technical field of flow measurement standards. Background technique [0002] In various industries of the national economy, with the development of industrial production automation and pipeline, various forms of flow measuring instruments are used more and more. In order to ensure the accuracy and reliability of the data measured by the flowmeters, these flowmeters must be calibrated regularly on the flow standard verification device. Among them, the verification of liquid flow has high requirements on the flow stability of the liquid source, so the liquid source of the liquid flowmeter verification device is often produced by the "water tower method". The water pump sends the water from the low pool to the high pool of the water tower. During the whole verification process, the high pool is in an overflow state, thus producing a constant water level constant pressure water sourc...

Claims

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Application Information

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IPC IPC(8): G01F25/00
Inventor 王可崇
Owner 王可崇
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